package com.jming.jike.util.sensitivity;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.BeanProperty;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.ser.ContextualSerializer;

import java.io.IOException;
import java.util.Objects;

/**
 * @author jinming.zhang
 * @version 0.0.1
 * @date 2022/05/31
 */
public class SensitiveJsonSerializer extends JsonSerializer<String> implements ContextualSerializer {

    private SensitiveStrategy strategy;

    @Override
    public void serialize(String value, JsonGenerator gen, SerializerProvider serializers) throws IOException {

        gen.writeString(strategy.getDesensitize().apply(value));
    }

    @Override
    public JsonSerializer<?> createContextual(SerializerProvider prov, BeanProperty property) throws JsonMappingException {

        Sensitive annotation = property.getAnnotation(Sensitive.class);

        if (Objects.nonNull(annotation) && Objects.equals(String.class, property.getType().getRawClass())) {
            this.strategy = annotation.strategy();
            return this;
        }

        return prov.findValueSerializer(property.getType(), property);
    }
}
